tdmp 1013 - technical drafting for mechanical piping

7/30/2019 Tdmp 1013 - Technical Drafting for Mechanical Piping

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TDMP 1013 - TECHNICAL DRAFTING

FOR MECHANICAL PIPING

DFT

101

FUNDAMENTAL OF PIPING

27-5-2013 (0820-1220)

Prepared by :

KHAIRUL RIZAN RAZDUAN


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Let us first Discuss about WHAT IS PIPE!

It is a Tubular item made of metal, plastic, glass etc.

meant for conveying Liquid, Gas or any thing that

flows.

It is a very important component for any industrial

plant. And its engineering plays a major part in

overall engineering of a Plant.

Piping FundamentalsFor Fresher

Engineers


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In any plant various fluids flow through

pipes from one end to other.

Now let us start with a plant where we see

three tanks.

Tank-1, Tank-2 and Tank-3

We have to transfer the content of Tank no.

1 to the other two tanks.

We will need to connect pipes to transfer the

fluids from Tank-1 to Tank-2 and Tank-3

LET US BRING THE PIPES.


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We have just brought the pipes, now

we need to solve some more

problems.

Pipes are all straight pieces.

We need some

branch

connections

We need some

bend connections

To solve these

problems we need

the pipe

components, which

are called

PIPE FITTINGS


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These are the pipe fittings,

There are various types of fittings for

various purposes, some common types are -

Elbows/Bends, Tees/Branches,

Reducers/Expanders, Couplings, Olets, etc.

Anyway, the pipes and

fittings are in place, butthe ends are yet to be

joined with the Tank

nozzles.

We now have to complete the

end connections.

These, in piping term, we call

TERMINAL

CONNECTIONS.


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These are flanged

joints

This is a welded joint

So far this is a nice arrangement.

But there is no control over the flow from

Tank-1 to other tanks.

We need some arrangement to stop the

flow if needed

To control the flow in a pipe line

we need to fit a special

component.

That is called - VALVE


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There are many types of valves, categorized

based on their construction and

functionality,

Those are - Gate, Globe, Check, Butterfly,

etc.

Other than valves anotherimportant line component of pipe

line is a filter, which cleans out

derbies from the flowing fluid.

This is called a STRAINER


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Here we see a more or less functional

piping system, with valves and strainer

installed.

Let us now investigate some aspects of

pipe flexibility.

If this tank

nozzle expands,

when the tank

is hot.

In such case we need to fit a

flexible pipe component at that

location, which is called an

EXPANSION JOINT


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When some fluid is flowing in a pipe we

may also like know the parameters like,

pressure, temperature, flow rate etc. of

the fluid.

To know these information we

need to install INSTRUMENTSin the pipeline.


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There are various types instruments to measure

various parameters. Also there are specific criteria

for installation of various pipe line instruments.Next we shall

look into how to

SUPPORT thepipe/and its

components.


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Here are some of the pipe supporting

arrangements. There can be numerous variants.

All depend on piping designers preference and

judgement.

Let us see some OTHER types of supports


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tdmp 1013 - technical drafting for mechanical piping

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